Development of Shock Waves from the Collision between a CME and a Helmet Streamer

Details Development of Shock Waves from the Collision between a CME and a Helmet Streamer Development of Shock Waves from the Collision between a CME and a Helmet Streamer

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...3e..84c&link_type=abstract

Solar Active Regions and 3D Magnetic Structure, 26th meeting of the IAU, Joint Discussion 3, 16-17 August, 2006, Prague, Czech R

Physics

Scientific paper

We study the development of shock waves from the interaction between a fast expanding CME and a helmet streamer. We perform MHD simulations for nonlinear magnetosonic waves (longitudinal waves propagating perpendicularly to the magnetic field lines) in the streamer that are triggered by the CME. If the trigger is strong enough, the wave will steepen and evetually become a shock. We first confirm the theoretical solution of Lee, Kim, & Lysak (2000, JGR, 105, 23345) for the evolution of nonlinear magnetosonic waves in the homogeneous media. We then extend our study to the magnetosonic waves in an inhomogeneous plasma and investigate the development of shock waves in the streamer.

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